1388383198 has 4 divisors (see below), whose sum is σ = 2082574800. Its totient is φ = 694191598.

The previous prime is 1388383193. The next prime is 1388383253. The reversal of 1388383198 is 8913838831.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388383193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347095798 + ... + 347095801.

It is an arithmetic number, because the mean of its divisors is an integer number (520643700).

Almost surely, 2^1388383198 is an apocalyptic number.

1388383198 is a deficient number, since it is larger than the sum of its proper divisors (694191602).

1388383198 is an equidigital number, since it uses as much as digits as its factorization.

1388383198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694191601.

The product of its digits is 995328, while the sum is 52.

The square root of 1388383198 is about 37261.0144521053. The cubic root of 1388383198 is about 1115.5861565753.

The spelling of 1388383198 in words is "one billion, three hundred eighty-eight million, three hundred eighty-three thousand, one hundred ninety-eight".